org.jetbrains.kotlin:kotlin-test-parent

IDE

• KT-16714 J2K: Write access is allowed from event dispatch thread only

Compiler

• KT-16801 Accessors of @PublishedApi property gets mangled
• KT-16673 Potentially problematic code causes exception when work with SAM adapters

Libraries

• KT-16557 Correct SinceKotlin(1.1) for all declarations in kotlin.reflect.full

Compiler

Analysis & diagnostics

• KT-12044 Assertion "Rewrite at slice LEXICAL_SCOPE" for 'if' with property references
• KT-13859 Wrong error about using unrepeatable annotation when mix implicit and explicit targets
• KT-14376 ClassCastException from object with vals
• KT-15464 Regression: compilation error "Supertypes of the following classes cannot be resolved..."
• KT-15334 Incorrect compilation error "val cannot be reassigned" inside do-while
• KT-15995 Do not report error on libraries that bundle Kotlin runtime in classpath
• KT-16272 Unreported deprecation on variables called as functions
• Some warnings are now reported even if there are compilation errors
• Add hint to use "-language-version", when applicable

JVM backend

• KT-15473 Invalid KFunction byte code signature for callable references

IDE

Issues fixed

• KT-13001 "Go to Type Declaration" is broken for stdlib types
• KT-15329 Regex is not inspected properly for Java character classes
• KT-15448 Kotlin facet adds the same sub-elements into pluginClasspaths element inside .iml on every Maven synchronization

Inspections, Intentions and Quickfixes

• KT-6217 Add inspection for unused equals expression
• KT-5045 Add intention to convert between two comparisons and range check and vice versa
• KT-15564 Add quickfix for changing primitive cast to primitive conversion method

Issues fixed

• KT-15227 "Replace if with elvis operator" silently changes semantics
• KT-14889 "Replace if with elvis operator" produces red code when result is referenced in 'if'
• KT-13593 Do not report "Right operand of elvis operator (?:) is useless if it is null" for left argument with platform type
• KT-15501 Incorrect "Add names to call arguments" when the only argument is a trailing lambda
• KT-14630 Improve diagnostic message for platform type inspection
• KT-15412 "Join declaration and assignment" can break code with smart casts
• KT-14815 "Add import" does not work with constructor reference is not working
• KT-15141 Bogus import popup for when function call cannot be resolved fully
• KT-14745 NPE in "Convert primary constructor to secondary"
• KT-15406 "Convert to secondary constructor" for enum class should put new members after enum values

Debugger

Issues fixed

• KT-15282 Debugger does not hit breakpoints in crossinline lambdas on Android

Android support

Issues fixed

• KT-14358 Kotlin extensions: rename layout file: Throwable: "PSI and index do not match"
• KT-14920 Kotlin Lint: "Android Lint for Kotlin | Incorrect support annotation usage" inspection does not report problems

Tools

Gradle

• KT-15218 Fix compatibility with Gradle 3.2+ distributions by isolating compiler process
• KT-13275 Support compiling with Jack&Jill enabled (Android)
• KT-16003 The project does not build after copy/move

Kapt

Issues fixed

• KT-15814 Regression: Kapt is not working in 1.0.6

Experimental kapt

• KT-15433 Kapt error messages are not being displayed in the console when compilation fails
• KT-15459 Kapt doesn't generate code in test module
• KT-15841 Kapt fails to build the project with StackOverflowError
• KT-15838 KaptError: Java file parsing error
• KT-15675 Support using kapt with Java-only projects
• KT-15803 Generate enum values with bodies properly
• KT-15915 Fix annotation processors writing to classes dir with kapt
• KT-15524 Error messages should display associated element information (if available)
• KT-15697 Annotation with AnnotationTarget.PROPERTY on a Kotlin property breaks annotation processing
• KT-16146 Kapt doesn't work in verbose mode
• KT-16153 Kapt does not properly escape valid kotlin names when generating stub java classes
• KT-16176 Kapt reports a lot of false positive errors

Compiler

• KT-12224 Add a diagnostic message for @JvmOverloads on interface methods
• KT-14186 Vararg parameters were generated as simple array parameters for Java
• KT-12664 Inner class was not found when a sub-directory with the same name is present in an outer class directory
• KT-14408 No-arg constructor should always be generated if all primary constuctor arguments have a default value
• KT-14469 StackOverflowError at EffectiveVisibilityKt.forVisibility
• KT-14581 NullPointerException at StackTransformationUtils when inlining extension function to a do-while loop condition
• KT-14678 Internal error with @JvmOverloads on constructor of inner class
• KT-14751 Class can't be resolved (related to annotation on types)
• KT-14774 Incorrect inner class modifier was generated for sealed inner classes

Stdlib

• KT-14883 Performance tune: Use byte array buffer directly to read the entire contents of a file

JS

• KT-12976 Print human-friendly error message on wrong modules order
• KT-13792 Inner class of local class did not capture the enclosing class properly
• KT-13912 NullPointerException at JsSourceGenerationVisitor when a Lambda with empty if block passed to inline function
• KT-14535 Fix broken modification of captured variables defined by a destructuring declaration
• KT-14752 Fix exception while typing @JsName annotation in editor
• Update JavaScript platform declarations (DOM, Events, etc) to latest spec
• Types that exist in runtime are now generated as abstract classes while non-existing types are now interfaces

IDE

• KT-14215 Show members of anonymous objects in File Structure window
• KT-14217 Support visibility filters in File Structure window
• Implement Kotlin facet
• KT-13811 Expose JVM target setting in IntelliJ IDEA plugin compiler configuration UI

Issues fixed

• KT-6535 "Go to Symbol" did not include Enum constants
• KT-10700 Run tests via Gradle does not work for Kotlin sources
• KT-12385 Closing quote was not automatically inserted when typing Char literal
• KT-12445 Fix IllegalStateException in the class chooser if Kotlin script file exists
• KT-13279 Deleting < in function call expression should delete matching >
• KT-13795 Escaped chars in char literals was not highlighted
• KT-14411 Code folding did not work in lambdas after some declatation
• KT-14585 ConvertJavaCopyPasteProcessor showed a dialog under write action
• KT-14741 Default JVM target was inferred to 1.8 for module with dependency on JDK 1.7
• KT-13354 Fix unstable resolve of value parameter types in IDE tests
• KT-13400 KDoc: Fully-qualified names were resolved incorrectly
• KT-13197 KDoc: Code completion should suggest relevant identifiers for reference-value tags
• KT-10665 KDoc: Do not show full KDoc popup on ctrl-hovering over declarations
• KT-13038 Quick doc: HTML entities in code blocks should be escaped
• KT-13389 Quick Doc: Hyperlinks to properties and functions did nothing
• KT-7739 Quick Doc: Type names in should be navigable
• KT-7995 Quick Doc: ReplaceWith value should be shown for deprecated elements
• KT-13197　Quick Doc: Markdown indented code blocks were not recognized
• KT-11032 Quick Doc: @sample was ignored
• KT-13699 Quick documentation should show supertype docs for overridden Java methods
• KT-14804 Avoid loading ast for decompiled files
• KT-5897 Pressing Enter after binary operations places the caret at the wrong indentation
• KT-10828 Support empty Unit function formatting on one line
• KT-15123 Do indent adjustment on the fly only for the first element in the line
• KT-15128 Do not assign type parameters from original proto if type is substituted with Any

Inspections, Intentions and Quickfixes

• KT-12095 Implement "Join Declaration and Assignment" intention
• KT-12701 Add a quickfix for @JvmOverloads on functions without default parameters, fix corresponding inspection range
• KT-14326 Implement Intention + Inspection to remove empty secondary constructor body
• KT-14521 Add Inspection to remove empty primary constructor
• KT-14569 Convert Property to Function Intention: Search occurrences using progress dialog
• KT-14501 Create from Usage: Support array access expressions/binary expressions with type mismatch errors
• KT-14500 Create from Usage: Suggest functional type based on the call with lambda argument and unresolved invoke()
• KT-13259 "Redundant if statement" inspection: report also assignments (as done for Java)
• KT-13393 Implement intention to convert function reference to lambda
• KT-12100 Add "Convert try-finally to use" intention
• KT-14459 Initialize with Constructor Parameter: Fix IDE freeze on properties in generic class
• KT-14044 Fix exception on deleting unused declaration in IDEA 2016.3
• KT-14019 Create from Usage: Support generation of abstract members for superclasses
• KT-14246 Intentions: Convert function type parameter to receiver
• KT-14246 Intentions: Convert function type receiver to parameter
• KT-14729 Implement "Add names to call arguments" intention
• KT-11760 Create from Usage: Support adding type parameters to the referenced type

Issues fixed

• KT-14396 "Remove redundant .let call" was not proposed for binary operations
• KT-14552 ChangeParameterTypeFix held a strong reference to PSI
• KT-14745 Fix KotlinNullPointerException in ConvertPrimaryConstructorToSecondary
• KT-14791 Fix incorrect "remove redundant .let" inspection for value with smart cast
• KT-14733 Fix incorrect intention to add out/in variance with inner classes
• KT-13777 Simplify condition intention should work in case booleanCond == true
• KT-14890 Inspection to remove curly braces from class definition should not trigger for nested classes followed by a secondary constructor
• KT-12633 Intention "Specify type explicitly" should offer all bounds for platform types
• KT-14100 Auto-import should suggest Enum constants
• KT-15087 Don't suggest something == true simplification for flexible types
• KT-14982 "Convert reference to lambda" worked incorrectly with static methods
• KT-14985 "Convert reference to lambda" worked incorrectly with apply
• KT-15028 Fix ClassCastException: KtParameter cannot be cast to KtFunction
• KT-14063 No "Change return type of enclosing function" for mismatched types
• KT-15030 "Remove redundant calls of conversion methods": Fix false positive for toList()
• KT-15142 "Remove redundant calls of conversion methods": Bogus warning for Any?.toString
• KT-13443 Do not try to calculate icon for invalid PSI elements (fix PsiInvalidElementAccessException)
• KT-15074 Fix occasional freezes on startup (remove unnecessary cyclic dependency between KtStubElementTypes and KtNodeTypes)
• KT-14732 Fix Slow typing, copy-pasting, highlighting in Kotlin files due to auto-import suggestion calculation
• KT-15227 "Replace if with elvis" silently changed semantics

Refactorings

Issues fixed

• KT-14583 Change Signature: Use new signature when looking for redeclaration conflicts
• KT-14854 Extract Interface: Fix NPE on dialog opening
• KT-14814 Rename: Fix renaming of .kts file to .kt and vice versa
• KT-14361 Rename: Do not report redeclaration conflict for private top-level declarations located in different files
• KT-14596 Safe Delete: Fix exception on deleting Java class used in Kotlin import directive(s)
• KT-14325 Rename: Fix exceptions on moving file with facade class to another package
• KT-14197 Move: Fix callable reference processing when moving to another package
• KT-13781 Extract Function: Do not wrap companion member references inside of the with call

J2K

• KT-14604 Floating-point literals: "dot" + "exponent" char sequence was processed incorrectly
• KT-14885 Conversion-on-paste should not add duplicated import statements

Debugger

• KT-13485 Fix: Smart Step Into can't enter function in object
• KT-14374 Fix bad step-over behaviour for inline calls in Android Studio
• KT-12612 Breakpoint inside cross-inlined lambda did never hit
• KT-11521 KT-12734 KT-12470 Fix breakpoints in function literals in inline calls
• KT-14822 Can't call member extension in an object in Evaluate Expression
• KT-14916 Navigation to inline functions doesn't work for thread dump captured using "Get thread dump" button in debugger
• KT-14615 Now able to set breakpoint to lambda in return statement
• KT-14602 Fix slow editing while debugging (run full resolve with write action priority)
• KT-14892 Fix UI hangs on stepping in Kotlin code

Android support

• KT-12880 Implement "Create XML resources" quickfix
• KT-12020 Implement "Suppress" intention
• KT-14439 Lint: Filter only R class from the current module in the import quickfix
• KT-13243 Lint: Exception type in a try..catch block is checked now
• KT-14826 Lint: Fix exception from destructuring declarations
• KT-14047 Lint: Fix overloaded method detection in the API detector
• KT-14470 Lint: Fix false positives in FragmentManager.beginTransaction() inside SAM constructors
• KT-14610 Lint: Super call detector showed that super is not called when it is
• KT-14610 Lint: Fix "Unexpected container" exception for local class instance creation
• KT-15002 Lint: "API Level" inspection did not recognize throw expressions
• KT-12024 Lint: "Calling new methods on older versions" did not take control flow into account
• KT-14737 Lint: Fix false positives with some if structures
• KT-14825 Lint: "Calling new methods on older versions" did not report call on receiver in extension function
• KT-12023 Lint: Cast should trigger minSdk error
• KT-15018 Lint: Fix PluginException at IntellijLintUtils.getLocation()
• KT-14067 Android Extensions: Remove obsolete JPS plugin
• KT-12741 Android Extensions: Enable IDE integration only if it is enabled in the build.gradle file (apply plugin: 'kotlin-android-extensions')
• KT-14308 Fix hangs in IDEA/Android Studio on unresolved references (Data Binding)

Tools

Gradle

• KT-14724 main() was not called
• KT-15120 Gradle JS test compile task doesn't pick up production code
• KT-15217 Fix compatibility with Android Gradle plugin 2.3

Kapt

• KT-14937 Use javac annotation processing implementation, generate AST stubs for Kotlin classes (this replaces kapt2 implementation)
• KT-9440 Fix Execution failed for task: "Unable to delete file" on project with the experimental kapt plugin
• KT-10190 kaptTest configuration did not extend kapt
• KT-13767 Property-targeted annotations did not appear in kapt elements

Other

• KT-12149 Provide a way to avoid mandatory open qualifier for proxy classes (all-open plugin for Maven and Gradle)

Compiler

• KT-10210 Annotation written before a block-level expression now applies to the entire expression, not to its first prefix
• KT-13565 Remove net/sf/cglib/core/* classes from compiler jars
• KT-2787 Set reference target and report custom error instead unresolved reference for cases: interface, generic parameter, object + invoke, class without companion.
• KT-13408 Fix decompilation of types based on local classifiers
• KT-13730 Fix signature clash problems when extending Hashtable and similar classes
• Support for property reference inlining
• KT-11123 Fix implicit type arguments resolution for inner classes
• KT-11263 Refine diagnostic about type arguments for an outer class
• KT-12238, KT-10627 Fix inference when captured type is used as a lambda parameter type
• KT-13950 Fix false positive "Cannot capture" error reporting
• KT-13381, KT-13396 Prevent generation of delegations to interfaces private methods
• KT-13295 Add warning for redundant lateinit modifier
• KT-13952, KT-13005 Prohibit return type mismatch for delegation members
• KT-8154 Fix AssertionError when delegating base interface and implementing derived interface
• KT-13969 Fix VerifyError for do-while, continue and a condition in a local variable
• KT-14025 Fix CCE in OverloadResolver.findRedeclarations
• KT-14147 Report error on declaring 'getClass' in class or package
• KT-14146 Fix detection of accidental overrides with synthetic bridge
• KT-14188 Do not generate mutable collection stubs for Kotlin-only signatures
• KT-14195 Write generic signature for autogenerated toArray
• KT-13698 Optimize method count for collection stubs
• KT-14243 Fix wrong invocation descriptor on calling implicitly generated implementation in class
• KT-11585 Fix "Cannot pop operand off an empty stack" exception when accessing @JvmStatic property
• KT-14242 Fix runtime exception on array?.size
• Forbid use of expressions to the left of ::class
• KT-13926 Report error on usages of classes deprecated with DeprecationLevel.HIDDEN
• KT-14298 Add -api-version command line option
• KT-5044 Generate more efficient bytecode for in on ranges with double, float and long element type
• KT-14357 Fixed CompilationException in case of try-catch used in false condition
• KT-14012 Fixed internal error on every first compilation after the source code change
• KT-14304 Fixed inconsistent reporting of 'variable must be initialized' after assignment in anonymous object
• KT-14158 Fixed possible exception thrown when reporting unreachable code diagnostics
• KT-7929, KT-8442 Fixed various exceptions caused by trying to use destructuring declarations outside of a code block
• KT-14447 Fixed compiler exception if a value was changed but not used
• KT-14201 Fixed compiler exception for anonymous object with invoke and non-trivial closure
• KT-13890 Fixed incorrect bytecode generation causing IllegalAccessError at runtime for invoking protected method with default arguments
• KT-9297 Report "External declaration cannot be abstract" on property with external accessor

Reflection

• Various runtime performance optimizations
• KT-13700 Fix reflective access on overridden generic property reference

IDE

• KT-12852 Support breadcrumbs for Kotlin
• KT-13474 Fix performance of typing super call lambda
• Re-highlight only single function after local modifications
• Show "Variables and values captured in a closure" highlighting only for usages
• KT-9125 Support Type Hierarchy on references inside of super type call entries
• KT-13838 Add file name to the presentation of private top-level declaration (Go to symbol, etc.)
• KT-12697 Expand selection selects ": Type"
• KT-13693 Expand selection stops on brackets in indexing expression
• KT-4519 Show first line for folded block comments
• KT-5193 Multiline strings are now foldable
• KT-13473 Structure view now shows local functions
• KT-11775 Added icons for class initializers
• KT-11776 Primary constructor members are shown in Project view when "Show members" is enabled
• KT-13326 Speed search is now enabled in add import popup
• KT-3363 Support "Surround with if" for expressions
• KT-13927 exception Fixed on adding second inner class when there is a usage in Java of the first one
• KT-9009 Support for auto-import of Java static methods
• Improved performance for Find Usages of convention functions
• KT-13643 Support for Find Usages of invoke operator method
• KT-13605 Find Usages no longer fails to find usages of component function defined in Java
• KT-13953 Import member popup no longer suggests methods when only property or variable is valid
• KT-9019, KT-10178 Improved display of structure when "Group by file structure" is enabled
• KT-13475 Show context when invoking Show Implementations from Find Usages popup
• KT-13140 "Copy Reference" now copies JVM name of class or method to clipboard
• KT-10095 Support "Show expression type" in variable declaration position
• KT-10588 Show smart cast information in "Show expression type"
• KT-11310, KT-8803 Use short names in Show Expression Type
• KT-11640 Optimize imports prevents accidental changes in resolve because of import priorities
• KT-13976 Search Everywhere: Render function parameter types
• KT-13977 Search Everywhere: Render extension type in prefix position
• KT-12966 Fixed possible deadlock in IDE
• KT-13136 Reduced plugin memory usage on projects with large number of modules
• KT-13861 Correct Parameter Info for SAM adapters
• KT-13981, KT-5117 Add indent before colon of super types list on new line
• KT-7718 Fixed indent in constructor delegate call
• KT-13584 Fixed IDE misbehavior (exceptions, index corruption) after Java to Kotlin conversion
• KT-12402 Fixed resolve of databinding classes inside the IDE
• KT-14131 Formatter now removes spaces in labeled expressions
• KT-14327 Allow to select single word on double click in one line doc comment
• KT-14452 Fix handling of underscores in Markdown links
• KT-14153 Use correct fully-qualified name when creating run configurations for nested classes
• KT-13753 Fixed "Go to implementations" when a class/interface and its implementations are both declared in a local scope
• KT-14508 Improved performance of certain Find Usages operations

IDE. Code Completion

• KT-4710 Postfix code completion
• KT-13298 Completion after override val or override fun suggests base class method/property names
• KT-13047 Autocomplete no longer inserts a fully-qualified variable name inside a String
• KT-12083 Insert {} if needed when completing in string literal
• KT-13833 JavaScript: Smart type completion uses lower priority for elements of dynamic type
• KT-13728 Implicitly imported functions are shown higher in completion lists than non-imported
• KT-8664 Hide componentX() functions for data classes from completion
• KT-12077, KT-13009 Code completion and auto-import no longer insert FQN for annotations with use-site target inside primary constructor
• KT-13780 Fix failure of code completion in certain conditions
• KT-9835 Fix detection of receiver nullability
• KT-13810 Fix incorrect deletion of last inserted character

IDE. Refactorings

• KT-13155 Implement "Introduce Type Parameter" refactoring
• KT-11017 Implement "Extract Superclass" refactoring
• KT-11017 Implement "Extract Interface" refactoring Pull Up: Support properties declared in the primary constructor Pull Up: Support members declared in the companion object of the original class Pull Up: Show member dependencies in the refactoring dialog
• KT-9485 Push Down: Support moving members from Java to Kotlin class
• KT-13963 Rename: Implement popup chooser for overriding members

Issues Fixed

• KT-13542 Rename: Do not search parameter text occurrences outside of its containing declaration
• KT-8672 Rename: Optimize search of parameter references in calls with named arguments
• KT-9285 Rename: Optimize search of private class members
• KT-8867 Rename: Rename all overridden members if user chooses to refactor base declaration(s)
• Support inplace rename on type parameters
• KT-13630 Do not show Change Signature dialog when applying "Remove parameter" quick-fix
• KT-13535 Pull Up: Remove visibility modifiers on adding 'override'
• Pull Up: Drop 'override' modifier if moved member doesn't override anything
• KT-13216 Move: Report separate conflicts for each property accessor
• KT-13215 Move: Forbid moving of enum entries
• KT-13553 Move: Do not show directory selection dialog if target directory is already specified by drag-and-drop
• KT-13660 Move: Do not drop object receivers when calling variable of extension functional type
• KT-13903 Move: Remove companion object which becomes empty after the move
• KT-13916 Move: Report visibility conflicts in import directives
• KT-13906 Move Nested Class to Upper Level: Do not show directory selection dialog twice
• KT-13901 Move: Do not ignore target directory selected in the dialog (DnD mode)
• KT-13904 Move Nested Class to Upper Level: Preserve state of "Search in comments"/"Search for text occurrences" checkboxes
• KT-13909 Move Files/Directories: Fix behavior of "Open moved files in editor" checkbox
• KT-14004 Introduce Variable: Fix exception on trying to extract variable of functional type
• KT-13726 Move: Fix bogus conflicts due to references resolving to wrong library version
• KT-14096 Rename: When renaming Kotlin file outside of source root do not rename its namesake in a source root
• KT-13928 Move Inner Class to Upper Level: Fix replacement of outer class instances used in inner class constructor calls
• KT-12556 Allow using whitespaces and other symbols in "Generate -> Test Function" dialog
• KT-14122 Generate 'toString()': Permit for data classes
• KT-12398 Call Hierarchy: Show Kotlin usages of Java methods
• KT-14114 Move: Fix exception on moving Kotlin file without declarations
• KT-14157 Rename: Rename do-while loop variables in the loop condition
• KT-14128, KT-13862 Rename: Use qualified class name when looking for occurrences in non-code files
• KT-6199 Rename: Replace non-code class occurrences with new qualified name
• KT-14182 Move: Show error message on applying to enum entries
• Extract Function: Support implicit abnormal exits via Nothing-typed expressions
• KT-14234 Rename: Do not suggest type-based names for functions with primitive return types

IDE. Inspections, Intentions and Quickfixes

• Intention to convert loops over collections to use of standard library higher-order functions (filter, map, all, none etc.)
• KT-13519 Add intention+inspection to remove empty parentheses from method call with single lambda parameter
• KT-13384 Inspection to warn on using == with array types
• KT-12804 Add quickfix for "A type annotation is required on a value parameter"
• KT-11525 Implement "Create type parameter" quickfix
• KT-13521 Warning that right part of "expression ?: null" is useless
• KT-13773, KT-13674 Quickfixes for FINAL_UPPER_BOUND diagnostic
• KT-9590 Quickfix for accessing ::class of a non-reified type parameter
• KT-13551 Inspection + intention to replace .let { it.foo() } with .foo()
• KT-13744 Add "Copy concatenation text to clipboard" intention
• KT-13635 Implement quick fix to convert a too long char literal to a string
• KT-13945 Add intention to replace Math.max/min with coerceAtLeast/coerceAtMost
• KT-9839 Add intention to convert primary constructor to a secondary one and back
• KT-9931 Implement "Remove unused assignment" quickfix
• KT-13937 Inspection/Intention to replace size check with 'isNotEmpty' and 'isEmpty'
• KT-14241 Inspection/Intention to remove empty class body
• Inspection to detect implicit casts from dynamic to another Kotlin type
• KT-14032 Quickfix to replace if with elvis + safe-cast
• KT-7488 Intention action on a local variable of data class type: convert to multi-variable declaration
• KT-14238 Quickfix for ambiguously annotated binary expression
• KT-9950 Auto-import now offers to import extension method when an instance method has the same name but a mismatched signature
• KT-14342 Add quickfixes for lateinit errors
• KT-14199 Add Library: Fix exception due to resolution being run in the "dumb mode"
• Convert Receiver to Parameter: Fix this replacement
• KT-10871, KT-12625 Inspection to highlight redundant calls of conversion methods
• KT-14084 "Replace if expression with elvis operator" is now able to convert chained calls to safe-calls
• KT-12019 Added inspection to highlight redundant if statements

Issues fixed

• KT-9490 Convert receiver to parameter: use template instead of the dialog
• KT-11483 Move to Companion: Do not use qualified names as labels
• KT-13874 Move to Companion: Fix AssertionError on running refactoring from Conflicts View
• KT-13883 Move to Companion Object: Fix exception when applied to class
• KT-13876 Move to Companion Object: Forbid for functions/properties referencing type parameters of the containing class
• KT-13877 Move to Companion Object: Warn if companion object already contains function with the same signature
• KT-13933 Convert Parameter to Receiver: Do not qualify companion members with labeled 'this'
• KT-13942 Redundant 'toString()' in String Template: Disable for qualified expressions with 'super' receiver
• KT-13878 Remove Redundant Receiver Parameter: Fix exception receiver removal
• KT-13588 Allow to convert empty Unit returning functions to expression form
• KT-12297 Add function to supertype immediately removes redundant modifiers
• KT-14143 Create from Usages: Do not suggest on type-mismatched expressions which are not call arguments
• KT-14221 "Unused variable" is now reported only for last entry of destructuring declaration (if applicable)
• KT-14244 Fix destructure intention for MultiMap entries
• KT-13974 Enable use of intention to convert contains to in for CharSequence arguments
• KT-13719 Highlighting range for "var can be val" no longer includes preceding annotations
• KT-13884 Fix exception "Invalid root block PSI element" on replacing trivial when-expression to if
• KT-13882 Convert Receiver to Parameter: Fix AssertionError
• KT-14394 Lambda to reference: not-null types are now preferred for platform type receivers
• KT-14420 Fixed false positive of "Convert lambda to reference" with nested lambdas
• KT-14289 Correctly shorten qualified names when converting an object literal to lambda
• KT-13958 Fixed behavior of "Surround with null check" inside if statements
• KT-14065 Fixed false positive for "Variable can be declared immutable" for variables initialized in lambdas
• KT-14550 Fix handling of named arguments in "Lambda to reference"
• KT-14542 "If to elvis" handles calls with nullable result correctly

Debugger

• KT-13534 Debugger didn't step into 'for' body if there's inline function call in range expression
• KT-13751 Fix behavior of "step over" for inline calls
• KT-12924 Fixed "Step over" diving into recursive call
• KT-14068 Fixed showing toString() method result in watches when type has delegated properties
• KT-14488 Fixed stepping into a function starting with a val or var when "Use simple getters" option is enabled

Android

• Lint diagnostics updated to Android Studio 2.2
• KT-11715 "Extract string resource" intention

Issues fixed

• KT-12022 Report lint warnings even when file contains errors

Build Tools

• Track changes in Java files generated by kapt2
• KT-13633 All compiler options are now exposed as properties of Kotlin Gradle task
• KT-14056 Fixed exception "This and base file have different roots"
• KT-10401 Don't warn about absence of kotlin files
• KT-13823 Kapt: asMemberOf() should also check the containing type itself, not only its supertypes
• KT-13804 Kapt: Support type parameters in asMemberOf()
• KT-13865 Kapt: typeElement.asType() should preserve type parameters and propagate it to its supertypes
• KT-13917 Kapt: Dispose every JeElement and JeTypeMirror because some annotation processors may store them in static fields
• KT-13984 Kapt: Support apt options
• KT-14003 kotlinc shebang uses env
• KT-13638 Changed the way "Configure Kotlin in project" sets up Maven build
• KT-13478 Fixed creating Maven project by archetype
• KT-14253 Fixed problem when switching from kapt2 to kapt
• KT-14250 Fixed possible incremental build failure when using kapt
• KT-14055 Corruption of incremental compilation caches triggers automatic rebuild
• KT-14554 Newly introduced duplicate declarations correctly lead to failure of incremental build
• Improvements to the use of local connections in compiler daemon

JavaScript

• KT-2752 Support for @JsName annotation
• KT-13345 Basic support for class literals
• KT-7500 Remove intrinsic for Long.equals, because it's applied incorrectly for nullable longs
• KT-13576 Implement Long.hashCode function
• KT-12810 Support special modifiers(e.g. getter and setter) in IDL
• KT-13583 Allow local classes to capture members of outer classes
• KT-7397 Fix is operator with object operand
• KT-8283 Implement same semantics as JVM for comparing arrays using ==
• KT-13664 Write values of long compile-time constants as constants
• KT-14082 Module was wrongly treated as JVM when js-stdlib is not the first in dependencies
• KT-13825 Write simple name of class to constructor.$metadata$.simpleName.
• KT-12707 Proper translation of a constructor in subclass that calls secondary constructor of parent class
• KT-8385 Fix exception during translation of for expression with iterator having generic type constrained by Iterable
• KT-13830 Support case when LHS of augmented assignment is something different than qualified expression or array access
• KT-14194 HashMap.putAll no longer calls getKey/getValue

J2K

• KT-11990 native modifier is converted to external
• KT-13146 Fix infinite loop while converting self-referenced anonymous functions
• KT-13529 Improve conversion of Java code on paste
• KT-11804 Fix incorrect closing parenthesis position for method split to several lines
• KT-13628 New line was not preserved when converting Java to Kotlin
• KT-13818 Fix conversion of quotes in @code blocks
• KT-13750 serialVersionUID is automatically marked as const
• KT-11375, KT-9710, KT-8161 Fix conversion of floating point numbers where Java syntax isn't supported by Kotlin
• KT-8091 Fix conversion of octal escape sequences in string and char literals
• KT-10545 Fix conversion of array arguments for Java annotations
• KT-13550 Fix conversion of Boolean.TYPE
• KT-6424 Remove @SuppressWarnings annotations and //noinspection comments during conversion
• KT-13020, KT-13021 Do not delete unknown tags when converting Javadoc comments to KDoc
• KT-10885 Fix conversion of assignments used as expressions
• KT-14205 Notify user about syntax errors in files being converted
• KT-12677 Fix detection of SAM constructor redundancy
• KT-5410 Fix conversion of string concatentations when the first object in an expresion is not a string
• KT-5312 Fix handling of operator priority when convering complex expressions
• KT-14248 Fix formatting of constructors after conversion
• KT-12892 Fix placing of constructor comments after conversion
• KT-13695, KT-13159, KT-14531 Paste context is now more comprehensively taken into account when converting Java code copied from non-IDE sources

Compiler

Analysis & diagnostics

• KT-10968, KT-11075, KT-12286 Type inference of callable references
• KT-11892 Report error on qualified super call to a supertype extended by a different supertype
• KT-12875 Report error on incorrect call of member extension invoke
• KT-12847 Report error on accessing protected property setter from super class' companion
• KT-12322 Overload resolution ambiguity with constructor reference when class has a companion object
• KT-11440 Overload resolution ambiguity on specialized Map.put implementation from Java
• KT-11389 Runtime exception when calling Java primitive overloadings
• KT-8200 Exception when using non-generic interface with generic arguments
• KT-10237 Exception on an unresolved symbol in a type parameter bound in the 'where' clause
• KT-11821 Exception on incorrect number of generic arguments in a type parameter bound in the 'where' clause
• KT-12482 Exception: Implementation doesn't have the most specific type, but none of the other overridden methods does either
• KT-12687 Exception when 'data' modifier is applied to object
• KT-9620 AssertionError in DescriptorResolver#checkBounds
• KT-3689 IllegalAccess on a property with private setter of the subclass
• KT-6391 Wrong warning for array casting (Array<Any?> to Array<Any>)
• KT-8596 Exception when analyzing nested class constructor reference in an argument position
• KT-12982 Incorrect type inference when accessing mutable protected property via reflection
• KT-13206 Report "Cast never succeeds" if and only if ClassCastException can be predicted
• KT-12467 IllegalStateException: Concrete fake override should have exactly one concrete super-declaration: []
• KT-13340 Report "return is not allowed here" only on the return keyword, not the whole expression
• KT-2349, KT-6054 Report "uninitialized enum entry" if enum entry is referenced before its declaration
• KT-12809 Report "uninitialized variable" if property is referenced before its declaration
• KT-260 Do not report "cast never succeeds" when casting nullable to nullable
• KT-11769 Prohibit access from enum instance initialization code to members of enum's companion object
• KT-13371 Fix CompilationException: Rewrite at slice LEAKING_THIS key: REFERENCE_EXPRESSION
• KT-13401 Fix StackOverflowError when checking variance
• KT-13330, KT-13349 Fix AssertionError: Illegal resolved call to variable with invoke
• KT-13421 Fix AssertionError: Only integer constants should be checked for overflow
• KT-13555 Fix internal error "resolveToInstruction"
• KT-8989 Change error messages: Replace "invisible_fake" with "invisible (private in a supertype)"
• KT-13612 Val reassignment in try / catch
• KT-5469 Incorrect "is never used" warning for value used in catch block
• KT-13510 Missing "Nested class not allowed" error for anonymous object inside val initializer
• KT-13685 Fix NPE when resolving callable references on incomplete code
• Change error messages: Fix quotes around keywords in diagnostic messages
• Change error messages: Remove quotes around visibilities

Parser

• KT-7118 Improve error message after trailing dot in floating point literal
• KT-4948 Recover by following keyword
• KT-7915 Recover after val with no subsequent name
• KT-12987 Recover after val with no name before declaration starting with soft keyword

JVM code generation

• KT-12909 Do not generate redundant bridge for special built-in override
• KT-11915 Exception in entrySet when Map implementation in Kotlin extends another one
• KT-12755 Exception on property generation in multi-file classes
• KT-12983 VerifyError: Bad type on operand stack in arraylength
• KT-12908 Variable initialization in loop causes VerifyError: Bad local variable type
• KT-13040 Invalid bytecode generated for extension lambda invocation with safe call
• KT-13023 Char operations throw ClassCastException for boxed Chars
• KT-11634 Exception for super call in delegation
• KT-12359 Redundant stubs are generated on inheriting from java.util.Collection
• KT-11833 Error generating constructors of class on anonymous object inheriting from nested class of super class
• KT-13133 Incorrect InnerClasses attribute value for anonymous object copied from an inline function
• KT-13241 Indices optimization leads to VerifyError with smart cast receiver
• KT-13374 Fix compiler exception when inline function contains anonymous object implementing an interface by delegation

Generated code performance

• KT-11964 No TABLESWITCH in when on enum bytecode if enum constant is imported
• KT-6916 Optimize 'for' over 'downTo'
• KT-12733 Optimize 'for' over 'rangeTo' as a non-qualified call

Standard Library

• KT-13115, KT-13297 Improve documentation formatting, clarify documentation for FileTreeWalk, Sequence and generateSequence.
• KT-12894 Do not fail in Closeable.use if the resource is null.

Reflection

• KT-12915 Runtime exception on callBy of JvmStatic function with default arguments
• KT-12967 Runtime exception on reference to generic property
• KT-13370 NullPointerException on companionObjectInstance of a built-in class
• KT-13462 Make KClass for primitive type equal to the corresponding KClass for wrapper type

IDE

• KT-12655 New Kotlin file: extra error message for already existing file
• KT-12760 Prohibit running non-Unit returning main function
• KT-12893 Impossible to open Kotlin compiler settings
• KT-10433 Copy-pasting reference to companion object member causes import dialog
• KT-12803 Class is marked as unused when it is only used is in method reference
• KT-13084 Run test method action executes all tests from same kotlin file
• KT-12718 Deadlock due to index reentering
• KT-13114 'Unused declaration' option 'JUnit static methods' is always enabled
• KT-12997 Override/Implement Members: Support "Copy JavaDoc" options for library classes
• KT-12887 "Extend selection" should select call's invoked expression
• KT-13383, KT-13379 Override/Implement Members: Do not make return type non-nullable if base return type is explicitly nullable
• KT-13218 Extract Function: Fix AssertionError on callable references
• KT-6520 Introduce 'maino' and 'psvmo' templates for generating main in object
• KT-13455 Override/Implement: Make return type non-nullable (platform collection case) when overriding Java method
• KT-10209 Find Usages: Do not duplicate containing declaration in super member warning dialog
• KT-12977 Hybrid dependency causes "outdated binary" warning to appear in non-js project
• KT-13057 Go to inheritors on Enum should navigate to all enum classes
• Fix exception when choose Gradle configurer after project is synced
• Allow configuring Kotlin in Gradle module without Kotlin sources
• Show all Kotlin annotations when browsing hierarchy of "java.lang.Annotation"

Completion

• KT-12793 Suggest abstract protected extension methods

Performance

• KT-12645 Lazily calculate FQ name for local classes
• KT-13071 Fix severe freezes because of long lint checks on large files

Highlighting

• KT-12937 Java synthetic accessors highlighting does not differ from local variables

KDoc

• KT-12998 Backslash is not rendered
• KT-12999 Backtick inside inline code block is not rendered
• KT-13000 Exclamation mark is not rendered
• KT-10398 Fully qualified link is not resolved in editor
• KT-12932 Link to library element is not clickable
• KT-10654 Quick Doc can't follow KDoc link in referenced function description
• KT-9271 Show Quick Doc for implicit lambda parameter 'it'

Formatter

• KT-12830 Remove spaces before ? in nullable types
• KT-13314 Format spaces around !is and !in

Intention actions, inspections and quickfixes

New features

• KT-12152 "Leaking this" inspection reports dangerous operations inside constructors including:
  • Accessing non-final property in constructor
  • Calling non-final function in constructor
  • Using 'this' as function argument in constructor of non-final class
• KT-13187 "Make constructor parameter a val" should make the val private or public depending on its option
• KT-5771 Mark setter parameter type as redundant and provide quickfix to remove it
• KT-9228 Add quickfix to remove '@' from annotation used as argument of another annotation
• KT-12251 Add quickfix to fix type mismatch for primitive literals
• KT-12838 Add quickfix for "Illegal usage of inline parameter" that adds noinline
• KT-13134 Add quickfix for wrong Long suffix (Use L instead of l)
• KT-10903 Add intention to convert lambda to function reference
• KT-7492 Support "Create abstract function/property" inside an abstract class
• KT-10668 Support "Create member/extension" corresponding to the extension receiver of enclosing function
• KT-12553 Show versions in inspection about different version of Kotlin plugin in Maven and IDE plugin
• KT-12489 Implement intention to replace camel-case test function name with a space-separated one
• KT-12730 Warn about using different versions of Kotlin Gradle plugin and bundled compiler
• KT-13173 Handle more cases in "Add Const Modifier" Intention
• KT-12628 Quickfix for invoke operator unsafe calls
• KT-11425 Inspection and quickfix to replace usages of equals() and compareTo() with operators
• KT-13113 Inspection to detect redundant string templates
• KT-13011 Inspection and quickfix for unnecessary lateinit
• KT-10731 Inspection and quickfix for unnecessary use of toString() inside string interpolation
• KT-12043 Intention to add / remove braces for when entry/entries
• KT-13483 Intention to replace a..b-1 with a until b and vice versa
• KT-6975 Quickfix for adding 'inline' to a function with reified generic

Bugfixes

• Show receiver type in the text of "Create extension" quick fix
• Show target class name in the text of "Create member" quick fix
• KT-12869 Usages of overridden Java method through synthetic accessors are not found
• KT-12813 "Find Usages" for property returns function calls
• KT-7722 Approximate unresolvable types in "Create from Usage" quickfixes
• KT-11115 Implement Members: Fix base member detection when abstract and non-abstract members with matching signatures are inherited from an interface
• KT-12876 Bogus suggestion to move property to constructor
• KT-13055 Exception in "Specify Type Explicitly" intention
• KT-12942 "Replace 'when' with 'if'" intention changes semantics when 'if' statements are used
• KT-12646 'Convert to block body' should use partial body resolve
• KT-12919 Use simple class name in "Change function return type" quickfix
• KT-13151 Incorrect warning "Make variable immutable"
• KT-13170 "Declaration has platform type" inspection: by default should not be reported for platform type arguments
• KT-13262 "Wrap with safe let call" quickfix produces wrong result for qualified function
• KT-13364 Do not suggest creating annotations/enum classes for unresolved type parameter bounds
• KT-12627 Allow warnings suppression for secondary constructor
• KT-13365 Disable "Create property" (non-abstract) in interfaces. Make "Create function" (non-abstract) generate function body in interfaces
• KT-8903 Remove Unused Receiver: update function/property usages
• KT-11799 Create from Usage: Make extension functions/properties 'private' by default
• KT-11795 Create from Usage: Place extension properties after the usage and generate stub getter
• KT-12951 Prohibit "Convert to expression body" when function body is 'if' without 'else' or 'when' is non-exhaustive
• KT-13430 "Add non-null asserted (!!) call" quickfix can't process unary operators
• KT-13336 "Convert concatenation to template" intention appends literal to variable omitting braces
• KT-13328 Do not suggest "Replace infix with safe call" inside conditions or binary / unary expressions
• KT-13452 "Replace if expression with assignment" doesn't work for cascade if-else if-else
• KT-13184 "Different Kotlin Version" inspection: false positive caused by verbose plugin version name
• KT-13480 "Can be replaced with comparison" inspection: false positive if extension method called 'equals' is used
• KT-13288 "Unused property" inspection: false positive when extending abstract class and implementing interface
• KT-13432 "Replace with safe call" quickfix does not work with compareTo() usage
• KT-13444 "Invert if" intention changes semantics for nested if with return
• KT-13536 Fix StackOverflowError from "Unused Symbol" inspection after importing enum's values()
• KT-12820 Platform Type Inspection: !! quickfix shouldn't be available when any generic parameter has platform type
• KT-9825 Incorrect "unused variable" warning when used in finally block
• KT-13715 Prohibit applying "Change to star projection" to functional types

Refactorings

New features

• KT-12017 Inline Property: Support "Do not show this dialog" and "Inline this occurrence" options

Bugfixes

• KT-11176 Add a space before '{' in functions generated "Generate hashCode/equals/toString"
• KT-12294 Introduce Property: Fix extraction of expressions referring to primary constructor parameters
• KT-12413 Change Signature: Fix bogus warning about unresolved type parameters/invalid functional type replacement
• KT-12084 Introduce Property: Do not skip outer classes if extractable expression is contained in object literal
• KT-13082 Rename: Fix exception on property rename preview
• KT-13207 Safe delete: Fix exception when removing any function in 2016.2
• KT-12945 Rename: Fix function description in super method warning dialog
• KT-12922 Introduce Variable: Do not suggest expressions without type
• KT-12943 Rename: Show function signatures in "Rename Overloads" dialog
• KT-13157 Extract Function: Automatically quote function name if necessary
• KT-13010 Extract Function: Fix generation of destructuring declarations
• KT-13128 Introduce Variable: Retain entered name after changing "Specify type explicitly" option
• KT-13054 Introduce Variable: Skip leading/trailing comments inside selection
• KT-13385 Move: Quote package name (if necessary) when moving declarations to new file
• KT-13395 Introduce Property: Fix duplicate count in popup window
• KT-13277 Change Signature: Fix usage processing to prevent interfering with Python support plugin
• KT-13254 Rename: Conflict detection for type parameters
• KT-13282, KT-13283 Rename: Fix name quoting for automatic renamers
• KT-13239 Rename: Warn about function name conflicts
• KT-13174 Move: Warn about accessibility conflicts due to moving to unrelated module
• KT-13175 Move: Warn about accessibility conflicts when moving entire file
• KT-13240 Rename: Do not report shadowing conflict if redeclaration is detected
• KT-13253 Rename: Report conflicts for constructor parameters
• KT-12971 Push Down: Do not specifiy visibility on generated overriding members
• KT-13124 Pull Up: Skip super members without explicit declarations
• KT-13032 Rename: Support accessors with non-conventional names
• KT-13463 Rename: Quote parameter name when necessary
• KT-13476 Rename: Fix parameter rename when new name matches call selector
• KT-9381 Rename: Do not search for component convention usages
• KT-13488 Rename: Support rename of packages with non-standard quoted names

Debugger

New features

• KT-7549 Provide an option to use the Kotlin syntax when evaluating watches and expressions in Java files

Bugfixes

• KT-13059 Fix error stepping on Step Over action in the end of while block
• KT-13037 Fix possible deadlock in debugger in 2016.1 and exception in 2016.2
• KT-12651 Fix exception in evaluate expression when bad identifier is used for marking object
• KT-12896 Fix "Step In" to inline functions for Android
• KT-13269 Make quick evaluate work on receiver in qualified expressions
• KT-12641 Unknown error on evaluate expression containing inline functions with complicated environment
• KT-13163 Fix exception when evaluating expression: Access is allowed from event dispatch thread only.

JS

New features

• KT-3008 Option to generate require.js and AMD compatible modules
• KT-5987 Add ability to refer to class
• KT-4115 Provide method to get Kotlin type name

Bugfixes

• KT-8003 Compiler exception on 'throw throw'
• KT-8318 Wrong result for 'when' containing only 'else' block
• KT-12157 Compiler exception on when condition containing return, break or continue
• KT-12275 Fix code generation with inline function call in condition of while/do..while
• KT-13160 Fix compiler exception when left-hand side of assignment is array access and right-hand side is inline function
• KT-12864 Make enums comparable
• KT-12865 Implementing Comparable breaks inheritance
• KT-12928 Nested inline causes undefined reference access
• KT-12929 Code with callable reference crashed at runtime (in some JS VMs)
• KT-13043 Invalid invocation generated for secondary constructor that calls constructor from base class with default parameters
• KT-13025 'function?.invoke' does not work properly with extension functions
• KT-12807 Lambda was lost in generated code
• KT-12808 Compiler duplicates arguments and the body of lambda when lambda is in RHS of assignment operator
• KT-12873 Fix ReferenceError when class delegates to complex expression
• KT-13658 Wrong code when capturing object

Tools

Gradle

• Gradle versions < 2.0 are not supported
• KT-13234 Setting kotlinOptions.destination and kotlinOptions.classpath is deprecated
• KT-9392 Kotlin classes are missing after converting Java class to Kotlin
• KT-12736 Kotlin classes are deleted when generated Java source is changed
• KT-12658 Build fails after android resources are edited
• KT-12750 Non clean compilation fails with gradle 2.14
• KT-12912 New class from subproject is unresolved with subsequent build with Gradle Daemon
• KT-12962 Incremental compilation: Track changes in generated files
• KT-12923 Incremental compilation: Compile error when code using internal class is modified
• KT-13528 Incremental compilation: support multi-project incremental compilation
• KT-13732 Android Build folder littered with copyFlavourTypeXXX

KAPT

New features

• KT-13499 Implement Annotation Processing API (JSR 269) natively in Kotlin

Bugfixes

• KT-12776 Android build fails with KAPT and generateStubs depending on library module names
• KT-13179 Java is recompiled every time with Gradle 2.14 and KAPT
• KT-12303, KT-12113 Do not pass non-relevant annotations to processors

REPL

• KT-12389 REPL just quits when toString() of user class throws an exception

CLI & Ant

• KT-13237 Include kotlin-reflect.jar to classpath by default, add '-no-reflect' key to suppress this behavior

CLI

• KT-13491 Support '-no-reflect' in 'kotlin' command

Maven

• KT-13211 Provide better compilation failure info for TeamCity builds

Compiler daemon

• Fix exception "java.lang.NoClassDefFoundError: Could not initialize class kotlin.Unit"

Compiler

Analysis & diagnostics

• Combination of open and override is no longer a warning
• KT-4829 Equal conditions in when is now a warning
• KT-6611 "This cast can never succeed" warning is no longer reported for Foo<T> as Foo<Any>
• KT-7174 Declaring members with the same signature as non-overridable methods from Java classes (like Object.wait/notify) is now an error (when targeting JVM)
• KT-12302 abstract modifier for a member of interface is no longer a warning
• KT-12452 open modifier for a member of interface without implementation is now a warning
• KT-11111 Overriding by inline function is now a warning, overriding by a function with reified type parameter is an error
• KT-12337 Reference to a property with invisible setter now has KProperty type (as opposed to KMutableProperty)

Issues fixed

• KT-4285 No warning for a non-tail call when the method inherits default arguments from superclass
• KT-4764 Spurious "Variable must be initialized" in try/catch/finally
• KT-6665 Unresolved reference leads to marking subsequent code unreachable
• KT-9597 NullPointerException during resolution of complicated star projections
• KT-11750 Exceptions when creating various entries with the name "name" in enums
• KT-11998 Smart cast to not-null is not performed on a boolean property in if condition
• KT-10648 Exhaustiveness check does not work when sealed class hierarchy contains intermediate sealed classes
• KT-10717 Type inference for lambda with local return
• KT-11266 Fixed "Empty intersection of types" internal compiler error for some cases
• KT-11857 Fix visibility check for dynamic members within protected method (when targeting JS)
• KT-12589 Improved "infix modifier is inapplicable" diagnostic message
• KT-11679 Erroneous call with argument causes Throwable at ResolvedCallImpl.getArgumentMapping()
• KT-12623 Fix ISE on malformed code

JVM code generation

• KT-5075 Optimize array/collection indices usage in for loop
• KT-11116 Optimize coercion to Unit, POP operations are backward-propagated

Issues fixed

• KT-11499 Compiler crashes with "Incompatible stack heights"
• KT-11943 CompilationException with extension property of KClass
• KT-12125 Wrong increment/decrement on Byte/Char/Short.MAX_VALUE/MIN_VALUE
• KT-12192 Exhaustiveness check isn't generated for when expression returning Unit
• KT-12200 Erroneously optimized away assignment to a property initialized to zero
• KT-12582 "VerifyError: Bad local variable type" caused by explicit loop variable type
• KT-12708 Bridge method not generated when data class implements interface with copy() method
• KT-12106 import static of reified companion object method throws IllegalAccessError

Performance

• Reduced number of IO operation when loading kotlin compiled classes

Сompiler options

• Allow to specify version of Kotlin language for source compatibility with older releases.
  • CLI: -language-version command line option
  • Maven: languageVersion configuration parameter, linked with kotlin.compiler.languageVersion property
  • Gradle: kotlinOptions.languageVersion property in task configuration
• Allow to specify which java runtime target version to generate bytecode for.
  • CLI: -jvm-target command line option
  • Maven: jvmTarget configuration parameter, linked with kotlin.compiler.jvmTarget property
  • Gradle: kotlinOptions.jvmTarget property in task configuration
• Allow to specify path to JDK to resolve classes from.
  • CLI: -jdk-home command line option
  • Maven: jdkHome configuration parameter, linked with kotlin.compiler.jdkHome property
  • Gradle: kotlinOptions.jdkHome property in task configuration

Standard Library

• Improve documentation (including KT-11632)
• List iteration used in collection operations is performed with an indexed loop when the list supports RandomAccess and the operation isn't inlined

IDE

Completion

New features

• Smart completion after by and in
• Improved completion in bodies of overridden members (when no type is specified)
• Improved presentation of completion items for property accessors
• Fixed keyword completion after try in assignment expression
• KT-8527 Include non-imported declarations on the first completion
• KT-12068 Special completion item for "[]" get-operator access
• KT-12080 Parameter names are now higher up in completion list

Issues fixed

• Fixed enum members being present in completion as static members
• Fixed QuickDoc not working for properties generated for java classes
• KT-9166 Code completion does not work for synthetic java properties on typing "g"
• KT-11609 No named arguments completion should be after dot
• KT-11633 Wrong indentation after completing a statement in data class
• KT-11680 Code completion of label for existing return with value inserts redundant whitespace
• KT-11784 Completion for if statement should add parentheses automatically
• KT-11890 Completion for callable references does not propose static Java members
• KT-11912 String interpolation is not converted to ${} form when accessing this.property
• KT-11957 No catch and finally keywords in completion
• KT-12103 Smart completion for nested SAM-adapter produces short unresolved name
• KT-12138 Do not show "::error" in smart completion when any function type accepting one argument is expected
• KT-12150 Smart completion suggests to compare non-nullable with null
• KT-12124 No code completion for a java property in a specific position
• KT-12299 Completion: incorrect priority of property foo over method getFoo in Kotlin-only code
• KT-12328 Qualified function name inserted when typing before if
• KT-12427 Completion doesn't work for "@receiver:" annotation target
• KT-12447 Don't use CompletionProgressIndicator in Kotlin plugin
• KT-12669 Completion should show variant with () when there is default lambda
• KT-12369 Pressing dot after class name should not cause insertion of constructor call

Spring support

New features

• KT-11692 Support Spring model diagrams for Kotlin classes
• KT-12079 Support "Autowired members defined in invalid Spring bean" inspection on Kotlin declarations
• KT-12092 Implement bean references in @Qualifier annotations
• KT-12135 Automatically configure components based on basePackageClasses attribute of @ComponentScan
• KT-12136 Implement package references inside of string literals
• KT-12139 Support Spring configurations linked via @Import annotation
• KT-12278 Implement Spring @Autowired inspection
• KT-12465 Implement Spring @ComponentScan inspection

Issues fixed

• KT-12091 Fixed unstable behavior of Spring line markers
• KT-12096 Fixed rename of custom-named beans specified with Kotlin annotation
• KT-12117 Group Kotlin classes from the same file in the Choose Bean dialog
• KT-12120 Show autowiring candidates line markers for @Autowired-annotated constructors and constructor parameters
• KT-12122 Fixed line marker popup on functions with @Qualifier-annotated parameters
• KT-12143 Fixed "Spring Facet Code Configuration (Kotlin)" inspection description
• KT-12147 Fixed exception on analyzing object declaration with @Component annotation
• KT-12148 Warn about object declarations annotated with Spring @Configuration/@Component/etc.
• KT-12363 Fixed "Autowired members defined in invalid Spring bean (Kotlin)" inspection description
• KT-12366 Fixed exception on analyzing class declaration upon annotation typing
• KT-12384 Fixed bean references in factory method calls

Intention actions, inspections and quickfixes

New features

• New icon for "New -> Kotlin Activity" action
• "Change visibility on exposure" and "Make visible" fixes now support all possible visibilities
• KT-8477 New inspection "Can be primary constructor property" with quick-fix
• KT-5010 "Redundant semicolon" inspection with quickfix
• KT-9757 Quickfix for "Unused lambda expression" warning
• KT-10844 Quick fix to add crossinline modifier
• KT-11090 "Add variance modifiers to type parameters" inspection
• KT-11255 Move Element Left/Right actions
• KT-11450 "Modality is redundant" inspection
• KT-11523 "Add @JvmOverloads annotation" intention
• KT-11768 "Introduce local variable" intention
• KT-11806 Quick-fix to increase visibility for invisible member
• KT-11807 Use function body template when generating overriding functions with default body
• KT-11864 Suggest "Create function/secondary constructor" quick fix on argument type mismatch
• KT-11876 Quickfix for "Extension function type is not allowed as supertype" error
• KT-11920 "Increase visibility" and "Decrease visibility" quickfixes for exposed visibility errors
• KT-12089 Quickfix "Make primary constructor parameter a property"
• KT-12121 "Add toString() call" quickfix
• KT-11104 New quickfixes for nullability problems: "Surround with null check" and "Wrap with safe let call"
• KT-12310 New inspection "Member has platform type" with quickfix

Issues fixed

• Fixed "Convert property initializer getter" intention being available inside lambda initializer
• Improved message for "Can be declared as val" inspection
• KT-3797 Quickfix to make a function abstract should not be offered for object members
• KT-11866 Suggest "Create secondary constructor" when constructors exist but are not applicable
• KT-11482 Fixed exception in "Move to companion object" intention
• KT-11483 Pass implicit receiver as argument when moving member function to companion object
• KT-11512 Allow choosing any source root in "Move file to directory" intention
• KT-10950 Keep original file package name when moving top-level declarations to separate file (provided it's not ambiguous)
• KT-10174 Optimize imports after applying "Move declaration to separate file" intention
• KT-11764 Intention "Replace with a forEach function call should replace continue with return@forEach
• KT-11724 False suggestion to replace with compound assignment
• KT-11805 Invert if-condition intention breaks code in case of end of line comment
• KT-11811 "Make protected" intention for a val declared in parameters of constructor
• KT-11710 "Replace if with elvis operator": incorrect code generated for if expression
• KT-11849 Replace explicit parameter with it changes the meaning of code because of the shadowing
• KT-11870 "Replace with Elvis" refactoring doesn't change the variable type from T? to T
• KT-12069 Specify language for all Kotlin code inspections
• KT-11366 "object Companion is never used" warning in intellij
• KT-11275 Inconsistent behaviour of "move lambda argument out of parentheses" intention action when using lambda calls with function arguments without parentheses
• KT-11594 "Add non-null asserted (!!) call" applied to unsafe cast to nullable type causes AE at KtPsiFactory.createExpression()
• KT-11982 False "Redundant final modifier" reported
• KT-12040 "Replace when with if" produce invalid code for first entry which has comment
• KT-12204 "Use classpath of module" option in existing Kotlin run configuration may be changed when a new run configuration is created
• KT-10635 Don't mark private writeObject and readObject methods of Serializable classes as unused
• KT-11466 "Make abstract" quick fix applies to outer class of object with accidentally abstract function
• KT-11120 Constructor parameter/field reported as unused symbol even if it have used annotation
• KT-11974 Invert if-condition intention loses comments
• KT-10812 Globally unused constructors are not marked as such
• KT-11320 Don't mark @BeforeClass (JUnit4) annotated functions as unused
• KT-12267 "Change type" quick fix converts to Int for Long literal
• KT-11949 Various problems fixed with "Constructor parameter is never used as a property" inspection
• KT-11716 "Simply for using destructuring declaration" intention: incorrect behavior for data classes
• KT-12145 "Simplify for using destructuring declaration" should work even when no variables declared inside loop
• KT-11933 Entities used only by alias are marked as unused
• KT-12193 Convert to block body isn't equivalent for when expressions returning Unit
• KT-10779 Simplify for using destructing declaration: intention / inspection quick fix is available only when all variables are used
• KT-11281 Fix exception on applying "Convert to class" intention to Java interface with Kotlin inheritor(s)
• KT-12285 Fix exception on test class generation
• KT-12502 Convert to expression body should be forbidden for non-exhaustive when returning Unit
• KT-12260 ISE while replacing an operator with safe call
• KT-12649 "Convert if to when" intention incorrectly deletes code
• KT-12671 "Shot type" action: "Type is unknown" error on an invoked expression
• KT-12284 Too wide applicability range for "Add braces to else" intention
• KT-11975 "Invert if-condition" intention does not simplify is expression
• KT-12437 "Replace explicit parameter" intention is suggested for parameter of inner lambda in presence of it from outer lambda
• KT-12290 Navigate to the generated declaration when using "Implement abstract member" intention
• KT-12376 Don't show "Package directive doesn't match file location" in injected code
• KT-12777 Fix exception in "Create class" quickfix applied to unresolved references in type arguments

Language injection

• Apply injection for the literals in property initializer through property usages
• Enable injection from Java or Kotlin function declaration by annotating parameter with @Language annotation
• KT-2428 Support basic use-cases of language injection for expressions marked with @Language annotation
• KT-11574 Support predefined Java positions for language injection
• KT-11472 Add comment or @Language annotation after "Inject language or reference" intention automatically

Refactorings

New features

• KT-6372 Add name suggestions to Rename dialog
• KT-7851 Respect naming conventions in automatic variable rename
• KT-8044, KT-9432 Support @JvmName annotation in rename refactoring
• KT-8512 Support "Rename tests" options in Rename dialog
• KT-9168 Support rename of synthetic properties
• KT-10578 Support automatic test renaming for facade files
• KT-12657 Rename implicit usages of annotation method value
• KT-12759 Suggest renaming both property accessors with matching @JvmName when renaming one of them from Java

Issues fixed

• KT-4791 Rename overridden property and all its accessors on attempt to rename overriding accessor in Java code
• KT-6363 Do not rename ambiguous references in import directives
• KT-6663 Fixed rename of ambiguous import reference to class/function when some referenced declarations are not changed
• KT-8510 Preserve "Search in comments and strings" and "Search for text occurrences" settings in Rename dialog
• KT-8541, KT-8786 Do now show 'Rename overloads' options if target function has no overloads
• KT-8544 Show more detailed description in Rename dialog
• KT-8562 Show conflicts dialog on attempt of redeclaration
• KT-8611 Qualify class references to resolve rename conflicts when possible
• KT-8732 Implement Rename conflict analysis and fixes for properties/parameters
• KT-8860 Allow renaming class by constructor delegation call referencing primary constructor
• KT-8892 Suggest renaming base declarations on overriding members in object literals
• KT-9156 Quote non-identifier names in Kotlin references
• KT-9157 Fixed in-place rename of Kotlin expression referring Java declaration
• KT-9241 Do not replace Java references to synthetic component functions when renaming constructor parameter
• KT-9435 Process property accessor usages (Java) in comments and string literals
• KT-9444 Rename dialog: Allow typing any identifier without backquotes
• KT-9446 Copy default parameter values to overriding function which is renamed while its base function is not
• KT-9649 Constraint search scope of parameter declared in a private member
• KT-10033 Qualify references to members of enum companions in case of conflict with enum entries
• KT-10713 Skip read-only declarations when renaming parameters
• KT-10687 Qualify property references to avoid shadowing by parameters
• KT-11903 Update references to facade class when renaming file via matching top-level class
• KT-12411 Fix package name quotation in Move refactoring
• KT-12543 Qualify property references with this to avoid renaming conflicts
• KT-12732 Copy default parameter values to overriding function which is renamed by Java reference while its base function is unchanged
• KT-12747 Fix exception on file copy

Java to Kotlin converter

New features

• KT-4727 Convert Java code copied from browser or other sources

Issues fixed

• KT-11952 Assertion failed in PropertyDetectionCache.get on conversion of access to Java constant of anonymous type
• KT-12046 Recursive property setter
• KT-12039 Static imports converted missing ".Companion"
• KT-12054 Wrong conversion of instanceof checks with raw types
• KT-12045 Convert Object() to Any()

Android Lint

Issues fixed

• KT-12015 False positive for Bundle.getInt()
• KT-12023 "minSdk" lint check doesn't work for as/is
• KT-12674 "Calling new methods on older versions" errors for inlined constants
• KT-12681 Running lint from main menu: diagnostics reported for java source files only
• KT-12173 False positive for "Toast created but not shown" inside SAM adapter
• KT-12895 NoSuchMethodError thrown when saving a Kotlin file

KDoc

New features

• Support for @receiver tag

Issues fixed

• Rendering of _ and * standalone characters
• Rendering of code blocks
• KT-9933 Indentation in code fragments is not preserved
• KT-10998 Spaces around links are missing in return block
• KT-11791 Markdown links rendering
• KT-12001 Allow use of @param to document type parameter

Maven support

New features

• Inspections that check that kotlin IDEA plugin, kotlin Maven plugin and kotlin stdlib are of the same version
• KT-11643 Inspections and intentions to fix erroneously configured Maven pom file
• KT-11701 "Add Maven Dependency quick fix" in Kotlin source files
• KT-11743 Intention to replace kotlin-test with kotlin-test-junit

Issues fixed

• KT-9492 Configuring multiple Maven Modules
• KT-11642 Kotlin Maven configurator tags order
• KT-11436 "Choose Configurator" control opens dialogs with inconsistent modality (linux)
• KT-11731 Default maven integration doesn't include documentation
• KT-12568 Execution configuration: file path completion works only in some sub-elements of <sourceDirs>
• KT-12558 Configure Kotlin in Project: "Undo" should revert changes in all poms
• KT-12512 "Different IDE and Maven plugin version" inspection is being invoked for non-tracked pom.xml files

Debugger

New features

• KT-11438 Support navigation from stacktrace to inline function call site

Issues fixed

• Do not step into inline lambda argument during step over inside inline function body
• Fix step over for inline argument with non-local return
• KT-12067 Deadlock in Kotlin debugger is fixed
• KT-12232 No code completion in Evaluate Expression and Throwable at CodeCompletionHandlerBase.invokeCompletion()
• KT-12137 Evaluate expression: code completion/intention actions allows to use symbols from modules that are not referenced
• KT-12206 NoSuchFieldError in Evaluate Expression on a property of a derived class
• KT-12678 NoSuchFieldError in Evaluate Expression on accessing delegated property defined in other module
• KT-12773 Fix debugging for Kotlin JS projects

Formatter

Issues fixed

• KT-12035 Spaces around as
• KT-12018 Spaces between function name and arguments in infix calls
• KT-11961 Spaces before angle bracket in method definition
• KT-12175 Don't enforce empty line between secondary constructors without body
• KT-12548 Spaces around is keyword
• KT-12446 Spaces before class type parameters
• KT-12634 Spaces between method name and parenthesis in method call
• KT-10680 Spaces around in keyword
• KT-12791 Spaces between curly brace and expression inside string template
• KT-12781 Spaces between annotation and expression
• KT-12689 Spaces around semicolons
• KT-12714 Spaces around parentheses in enum elements

Other

New features

• Added "Decompile" button to Kotlin bytecode toolwindow
• Added Kotlin "Tips of the day"
• Added "Kotlin 1.1 EAP" to "Configure Kotlin Plugin updates"
• KT-2919 Constructor calls are no longer highlighted as classes
• KT-6540 Infix function calls are now highlighted as regular function calls
• KT-9410 Annotations in Kotlin are now highlighted with the same color as in Java by default
• KT-11465 Type parameters in Kotlin are now highlighted with the same color as in Java by default
• KT-11657 Allow viewing decompiled Java source code for Kotlin-compiled classes
• KT-11704 Support file path references inside of Kotlin string literals
• KT-12076 Kotlin Plugin update check: always display installed version number
• KT-11814 New icon for kotlin annotation classes
• KT-12735 Convert JavaDoc to KDoc when overriding Java class member in Kotlin

Issues fixed

• KT-5960 Can't find usages for Java methods used from Kotlin by call convention
• KT-8362 "New Kotlin file": Keywords should be escaped in package name
• KT-8682 Respect "Copy JavaDoc" option in the "Override/Implement Members..." dialog
• KT-8817 Fixed rename of Java getters/setters through synthetic property references in Kotlin
• KT-9399 Find Usages omits Kotlin annotation parameter usage in Java source
• KT-9797 "Kotlin Bytecode" toolwindow breaks after closing
• KT-11145 Use progress indicator when searching usages in Introduce Parameter
• KT-11155 Allow running multiple Kotlin classes as well as running mixtures of Kotlin and Java classes
• KT-11495 Show recursion line markers for extension function calls with different receiver
• KT-11659 Generate abstract overrides for Any members inside of Kotlin interfaces
• KT-12070 Add empty line in error message of Maven and Gradle configuration
• KT-11908 Allow properties with custom setters to be used in generated equals/hashCode/toString
• KT-11617 Fixed title of Introduce Parameter declaration chooser
• KT-11817 Fixed rename of Kotlin enum constants through Java references
• KT-11816 Fixed usages search for Safe Delete on simple enum entries
• KT-11282 Delete interface reference from super-type list when applying Safe Delete to Java interface
• KT-11967 Fix Find Usages/Rename for parameter references in XML files
• KT-10770 "Optimize imports" will not keep import if a type is only referenced by kdoc
• KT-11955 Copy/Paste inserts fully qualified name when copying function with overloads
• KT-12436 "Replace explicit parameter with it": java.lang.Exception at BaseRefactoringProcessor.run()
• KT-12440 Removing unused parameter results in Exception "Refactorings should not be started inside write action"
• KT-12006 getLanguageLevel is slow for Kotlin light classes
• KT-12026 "Constant expression required" in Java for const Kotlin values
• KT-12259 ClassCastException in light classes while trying to create generic property
• KT-12289 Remove unnecessary ? from serr live template
• KT-12110 Map help button of the Compiler - Kotlin page
• KT-12075 Kotlin Plugin update check: make dumbaware
• KT-10255 call BuildManager.clearState(project) in apply() method of Kotlin Compiler Settings configurable
• KT-11841 New Project / Module wizard, Gradle: pure Kotlin module is created without repositories call in build.gradle
• KT-11095 Java cannot infer generic return type of Kotlin function (with java 8 language level)
• KT-12090 Intellij/Kotlin plugin does not handle generic return type of static method defined in Kotlin, called from Java
• KT-12206 Fix NoSuchFieldError on accessing base property without backing field in evaluate expression
• KT-12516 File Structure: Kotlin annotation classes have Java annotation icons
• KT-11328 "New Kotlin class": generates packages when fully qualified name is specified
• KT-11778 Exception in Lombok plugin: Rewrite at slice FUNCTION
• KT-11708 "Go to declaration" doesn't work on a call to function with SAM conversion on a derived type
• KT-12381 Prefer not-nullable return type when overriding Java method without nullability annotation
• KT-12647 Performance improvement for test-related line markers
• KT-12526 Kotlin intentions increase PSI modification counts from isAvailable, even in daemon threads

Reflection

Issues fixed

• KT-11531 Optimize "KCallable.name"
• KT-10771 Reflection on Function objects does not support lambdas with generic return type
• KT-11824 Reflection inconsistency between member property and accessor

JS

• Improve performance of maps and sets

Issues fixed

• KT-6942 Generate structural equality check (i.e. Any.equals) instead of referential check (===) value equality patterns in when
• KT-7228 Wrong AbstractList signature
• KT-8299 Wrong access to private member in autogenerated code in data class
• KT-11346 Reified functions like filterIsInstance are now available in JS Standard Library
• KT-12305 Incorrect translation of vararg in @native functions
• KT-12254 JsEmptyExpression in initializer when compiling code like val x = throw Exception()
• KT-11960 Wrong code generated when a method of a local class calls constructor of the class
• KT-10931 Incorrect inlining of library method with optional parameters
• KT-12417 Wrong check cast generated for KMutableProperty

Tools

New features

• KT-11839 Maven goal to execute kotlin script

Issues fixed

• KAPT: fix error when using enum constructors with parameters
• Various problems with gradle 2.2 fixed: KT-12478, KT-12406, KT-12478
• KT-12595 JPS: Fixed com.intellij.util.io.MappingFailedException: Cannot map buffer
• KT-11166 Gradle: Unable to access internal classes from test code within the same module
• KT-12352 KAPT: Fix "Classpath entry points to a non-existent location" warnings
• KT-12074 Building Kotlin maven projects using a parent pom will silently fail
• KT-11770 Warning "RuntimeException: Could not find installation home path" when using Gradle Incremental Compilation
• KT-10969 Android extensions: NullPointerException when finding view in Fragment
• KT-11885 Gradle/Android: Unresolved reference "kotlinx" when classpath dependency is defined in root build.gradle
• KT-12786 Deprecation warning with Gradle 2.14

Compiler

Analysis & diagnostics

• KT-7437, KT-7971, KT-7051, KT-6125, KT-6186, KT-11649 Implement missing checks for protected visibility
• KT-11666 Report "Implicit nothing return type" on non-override member functions
• KT-4328, KT-11497, KT-10493, KT-10820, KT-11368 Report error if some classes were not found due to missing or conflicting dependencies
• KT-11280 Do not perform smart casts for values with custom equals compared with ==
• KT-3856 Fix wrong "inner class inaccessible" diagnostic for extension to outer class
• KT-3896, KT-3883, KT-4986 do...while (true) is now considered an infinite loop
• KT-10445 Prohibit initialization of captured val in lambda or in local function
• KT-10042 Correctly handle local classes and anonymous objects in control flow analysis
• KT-11043 Prohibit complex expressions with class literals in annotation arguments
• KT-10992, KT-11007 Fix multiple problems related to smart casts
• KT-11490 Prohibit nested intersection types in return position
• KT-11411 Report "illegal noinline/crossinline" on parameter of subtype of function type
• KT-3083 Report "conflicting overloads" for functions with parameter of type parameter type
• KT-7265 Parse anonymous functions in blocks as expressions
• KT-8246 Handle break/continue for outer loop correctly in case of try/finally in between
• KT-11300 Report error on increment or augmented assignment when get is an operator but set is not
• Report warning about unused anonymous functions
• Improve callable reference type in some ambiguous cases
• Improve multiple diagnostic messages: KT-10761, KT-9760, KT-10949, KT-9887, KT-9550, KT-11239, KT-11819
• Fix several compiler bugs leading to exceptions: KT-9820, KT-11597, KT-10983, KT-10972, KT-11287, KT-11492, KT-11765, KT-11869

JVM code generation

• KT-8269, KT-9246, KT-10143 Fix visibility of protected classes in bytecode
• KT-11363 Fix potential binary compatibility breakage on using when over enums in inline functions
• KT-11762 Fix VerifyError caused by explicit loop variable type
• KT-11645 Fix NoSuchFieldError on private const property in multi-file class
• KT-9670 Optimize Class <-> KClass wrapping/unwrapping when getting values from annotation
• KT-6842 Optimize unnecessary boxing and interface calls on iterating over ranges
• KT-11025 Don't inline const val properties in non-annotation contexts
• KT-5429 Write nullability annotations on extension receiver parameters
• KT-11347 Preserve source file and line number of call site when inlining certain standard library functions
• KT-11677 Write correct generic signatures for local classes in inlined lambdas
• KT-12127 Do not write unnecessary generic signature for property delegate backing field
• Fix multiple issues leading to exceptions or bad bytecode being generated: KT-11034, KT-11519, KT-11117, KT-11479

Java interoperability

• KT-3068 Load contravariantly projected collections in Java (List<? super T>) as mutable collections in Kotlin (MutableList<in T>)
• KT-11322 Do not lose type nullability information in SAM constructors
• KT-11721 Fix wrong "Typechecker has run into recursive problem" error on calling Kotlin get function as synthetic Java property
• KT-10691 Fix wrong "Inherited platform declarations clash" error on inheritance from generic Java class with overloaded methods

Command line compiler

• KT-9546 Flush stdout and stderr before shutdown when executing scripts
• KT-10605 Disable colored output on certain platforms to prevent crashes
• Report warning instead of error on unknown "-X" flags
• Remove the compiler option "Xmultifile-facades-open"

Compiler daemon

• Reduce read disk activity
• Fix compiler daemon JAR cache clearing on IDEA Ultimate

Standard library

• KT-11410 Reduce method count of the standard library by ~2k
• KT-9990 Optimize snapshot operations to return special collection implementations when result is empty or has single element
• KT-10794 EmptyList now implements RandomAccess
• KT-10821 Create at most one wrapper sequence for adjacent drop/take operations on sequences
• KT-11301 Make Map.plus accept Map out-projected by key type as either operand (receiver or parameter)
• KT-11485 Remove implementations of some internal intrinsic functions
• KT-11648 Add deprecated extension MutableList.remove to redirect to valid function removeAt
• KT-11348 kotlin.test: Make inline methods todo and currentStackTrace @InlineOnly not to lose stack trace
• KT-11745 Rename parameters of String.subSequence to match those of CharSequence.subSequence
• KT-10953 Clarify parameter order of lambda function parameter of *Indexed functions
• KT-10198 Improve docs for binarySearch functions
• KT-9786 Improve docs for trimIndent/trimMargin

Reflection

• KT-9952 Improve toString() for lambdas and function expressions when kotlin-reflect.jar is available
• KT-11433 Fix multiple resource leaks by closing InputStream instances
• KT-8131 Fix exception from calling KProperty.javaField on a subclass
• KT-10690 Support javaMethod and kotlinFunction for top level functions in a different file
• KT-11447 Support reflection calls to multifile class members
• KT-10892 Load annotations of const properties from multifile classes
• KT-11258 Don't crash on requesting members of Java collection classes
• KT-11502 Clarify KClass equality

JS

• KT-4124 Support nested classes
• KT-11030 Support local classes
• KT-7819 Support non-local returns in local lambdas
• KT-6912 Safe calls (x?.let { it }) are now inlined
• KT-2670 Support unsafe casts (as)
• KT-7016, KT-8012 Fix is-checks for reified type parameters
• KT-7038 Avoid unwanted side effects on is-checks for nullable types
• KT-10614 Copy array on vararg call with spread operator
• KT-10785 Correctly translate property names and receiver instances in assignment operations
• KT-11611 Fix translation of default value of secondary constructor's functional parameter
• KT-11100 Fix generation of invoke on objects and companion objects
• KT-11823 Fix capturing of outer class' this in inner's lambdas
• KT-11996 Fix translation of a call to a private member of an outer class from an inner class which is a subtype of the outer class
• KT-10667 Support inheritance from nested built-in types such as Map.Entry
• KT-7480 Remove declarations of LinkedList, SortedSet, TreeSet, Enumeration
• KT-3064 Implement CharSequence.repeat

IDE

New features:

• Spring Support
  • KT-11098 Inspection on final classes/functions annotated with Spring @Configuration/@Component/@Bean
  • KT-11405 Navigation and Find Usages for Spring beans referenced in annotation arguments and BeanFactory method calls
  • KT-3741 Show Spring-specific line markers on Kotlin classes
  • KT-11406 Support Spring EL injections inside of Kotlin string literals
  • KT-11604 Support "Configure Spring facet" inspection on Kotlin classes
  • KT-11407 Implement "Generate Spring Dependency..." actions
  • KT-11408 Implement "Generate @Autowired Dependency..." action
  • KT-11652 Rename bean attributes mentioned in Spring XML config together with corresponding Kotlin declarations
• Enable precise incremental compilation by default in non-Maven/Gradle projects
• KT-11612 Highlight named arguments
• KT-7715 Highlight vars that can be replaced by vals
• KT-5208 Intention action to convert string to raw string and back
• KT-11078 Quick fix to remove .java when KClass is expected
• KT-1494 Inspection to highlight public members with no documentation
• KT-8473 Intention action to implement interface or abstract class
• KT-10299 Inspection to warn on array properties in data classes
• KT-6674 Inspection to warn on protected symbols in effectively final classes
• KT-11576 Quick fix to suppress "Unused symbol" warning based on annotations on the declaration
• KT-10063 Quick fix for adding arrayOf wrapper for annotation parameters
• KT-10476 Quick fix for converting primitive types
• KT-10859 Quick fix to make var with private setter final
• KT-9498 Quick fix to specify property type
• KT-10509 Quick fix to simplify condition with senseless comparison
• KT-11404 Quick fix to let type implement missing interface
• KT-6785, KT-10013, KT-9996, KT-11675 Support Smart Enter for trailing lambda argument, try/catch/finally, property setter, init block
• Add kotlinClassName() and kotlinFunctionName() macros for use in live templates
• Auto-configure EAP-repository during Kotlin Maven and Gradle project set up

Issues fixed:

• KT-11678, KT-4768 Support navigation to Kotlin libraries from Java sources
• KT-9401 Support Change Signature quick fix for Java -> Kotlin case
• KT-8592 Fix "Choose sources" for Kotlin files
• KT-11256 Fix Navigate to declaration for Java constructor with @NotNull parameter
• KT-11018 Fix vars shown in Ctrl + Mouse Hover as vals
• KT-5105, KT-11024 Improve incompatible ABI versions editor strap, show the hint on how to resolve the problem
• KT-11638 Fixed hashCode() implementation in "Generate equals/hashCode" action
• KT-10971 Pull Members Up: Always insert spaces between keywords
• KT-11476, KT-4175, KT-10965, KT-11076 Formatter: fix multiple issues regarding space handling
• KT-9025 Improve "Create Kotlin Java runtime library" dialog usability
• KT-11481 Fix "Add import" intention not being available for is branches in when
• KT-10619 Fix completion after package name in annotation
• KT-10621 Do not show non-top level packages after @ in completion
• KT-11295 "Convert string to template" intention: fix exception on certain code
• KT-10750, KT-11424 "Convert if to when" intention now detects effectively else branches in subsequent code and performs more accurate comment handling
• Configure Kotlin: show only changed files in the notification "Kotlin not configured", restore all changed files in undo action
• KT-11556 Do not show "Kotlin not configured" for Kotlin JS projects
• KT-11593 Fix "Configure Kotlin" action for Gradle projects in IDEA 2016
• KT-11077 Use new built-in definition file format (.kotlin_builtins files)
• KT-5728 Remove closing curly brace in a string template when opening one is deleted
• KT-10883 "Explicit get or set call" quick fix: do not move caret too far away
• KT-5717 "Replace 'when' with 'if'": do not lose comments
• KT-10797 "Replace with operator" intention is not available anymore for non-operator functions
• KT-11529 Highlighting range for unresolved annotation name does not include @ now
• KT-11178 Don't show "Change type arguments" fix when there's nothing to change
• KT-11789 Don't interpret annotations inside Markdown code blocks as KDoc tags
• KT-11702 Fixed resolution of Kotlin beans with custom name
• KT-11689 Fixed exception on attempt to navigate to Kotlin file from Spring notification balloon
• KT-11725 Fixed renaming of injected SpEL references
• KT-11720 Fixed renaming of Kotlin beans through SpEL references
• KT-11719 Fixed renaming of Kotlin parameters references in XML files
• KT-11736 Fixed searching of Java usages for @JvmStatic properties and @JvmStatic @JvmOverloads functions
• KT-11862 Fixed bogus warnings about unresolved types in the Change Signature dialog
• Fix several issues leading to exceptions: KT-11579, KT-11580, KT-11777, KT-11868, KT-11845, KT-11486
• Fixed NoSuchFieldException in Kotlin module settings on IDEA Ultimate

Debugger

• KT-11705 "Smart step into" no longer skips methods from subclasses
• Debugger can now distinguish nested inline arguments
• KT-11326 Support private classes in Evaluate Expression
• KT-11455 Fix Evaluate Expression behavior for files with errors in sources
• KT-10670 Fix Evaluate Expression behavior for inline functions with default parameters
• KT-11380 Evaluate Expression now handles smart casts correctly
• KT-10148 Do not suggest methods from outer context in "Smart step into"
• Fix Evaluate Expression for expression created for array element
• Complete private members from libraries in Evaluate Expression
• KT-11578 Evaluate Expression: do not highlight completion variants from nullable receiver with grey
• KT-6805 Convert Java expression to Kotlin when opening Evaluate Expression from Variables view
• KT-11927 Fix "ambiguous import" error when invoking Evaluate Expression from Variables view for some field
• KT-11831 Fix Evaluate Expression for values of raw types
• Show error message when debug info for some local variable is corrupted
• Avoid 1s delay in completion in debugger fields if session is not stopped on a breakpoint
• Avoid cast to runtime type unavailable in current scope
• Fix text with line breaks in popup with line breakpoint variants
• Fix breakpoints inside inline functions in libraries sources
• Allow breakpoints at catch clause declaration
• KT-11848 Fix breakpoints inside generic crossinline lambda argument body
• KT-11932 Fix Step Over for while loop condition

Java to Kotlin converter

• Protected members used outside of inheritors are converted as public
• Support conversion for annotation constructor calls
• Place comments from the middle of the call to the end
• Drop line breaks between operator arguments (except +, -, && and ||)
• Add non-null assertions on call site for non-null parameters
• Specify type for variables with anonymous type if they have write accesses
• KT-11587 Fix conversion of static field accesses from other Java class
• KT-6800 Quote $ symbols in converted strings
• KT-11126 Convert annotations in annotations parameters correctly
• KT-11600 Do not produce unresolved toArray calls for Java Collection#toArray(T[])
• KT-11544 Fix conversion of uninitialized non-final field
• KT-10604 Fix conversion of scratch files
• KT-11543 Do not produce unnecessary casts of non-nullable expression to nullable type
• KT-11160 Fix IDE freeze

Android

• KT-7729 Add Android Lint checks for Kotlin (from Android Studio 1.5)
• KT-11487 Fixed sequential build with kapt and stubs enabled when Kotlin source file was modified and no Java source files were modified
• KT-11264 Action to create new activity in Kotlin
• KT-11201 Do not ignore items with similar names in kapt
• KT-11944 Rename Android Extensions imports when the layout file is renamed/deleted/added
• KT-10321 Do not upcast ViewStub to View
• KT-10841 Support @android:id/* IDs in Android Extensions

Maven

• KT-2917, KT-11261 Maven archetype for new Kotlin projects

Gradle

• KT-8487 Experimental support for incremental compilation with project property kotlin.incremental
• KT-11350 Fixed a bug causing Java rebuild when both Java and Kotlin are up-to-date
• KT-10507 Fix IllegalArgumentException "Missing extension point" on parallel builds
• KT-10932 Prevent compile tasks from running when nothing changes
• KT-11993 Fix NoSuchMethodError on access to internal members in production from tests (IDEA 2016+)

Issues fixed in update:

• https://youtrack.jetbrains.com/issue/KT-11584
• https://youtrack.jetbrains.com/issue/KT-11514
• https://youtrack.jetbrains.com/issue/KT-11590

Issues fixed in update: https://youtrack.jetbrains.com/issue/KT-11468, https://youtrack.jetbrains.com/issue/KT-11478

Compiler

Analysis & diagnostics issues fixed:

• KT-2277 Local function declarations are now checked for overload conflicts
• KT-3602 Special diagnostic is reported now on nullable ‘for’ range
• KT-10775 No compilation exception for empty when
• KT-10952 False deprecation warnings removed
• KT-10934 Type inference improved for whens
• KT-10902 Redeclaration is reported for top-level property vs classifier conflict
• KT-9985 Correct handling of safe call arguments in generic functions
• KT-10856 Diagnostic about projected out member is reported correctly on calls with smart cast receiver
• KT-5190 Calls of Java 8 Stream.collect
• KT-11109 Warning is reported on Strictfp annotation on a class because it's not supported yet
• KT-10686 Support generic constructors defined in Java
• KT-6958 Fixed resolution for overloaded functions with extension lambdas
• KT-10765 Correct handling of overload conflict between constructor and function in JPS
• KT-10752 If inferred type for an expression refers to a non-accessible Java class, it's a compiler error to prevent IAE in runtime
• KT-10913, KT-10186, KT-5198 False “unreachable code” fixed for various situations
• Minor: KT-3680, KT-9702, KT-8776, KT-6745, KT-10919, KT-9548

JVM code generation issues fixed:

• KT-11153 NoClassDefFoundError is fixed on primitive iterators during boxing optimization
• KT-7319 Correct parameter names for @JvmOverloads-generated methods
• KT-10425 Non-const values of member properties are not inlined now
• KT-11163 Correct calls of custom compareTo on primitives
• KT-11081 Reified type parameters are correctly stored in anonymous objects
• KT-11121 Generic properties generation is fixed for interfaces
• KT-11285, KT-10958 Special bridge generation refined
• KT-10313, KT-11190, KT-11192, KT-11130 Diagnostics and bytecode fixed for various operations with Long
• KT-11203, KT-11191, KT-11206, KT-8505, KT-11203 Handling of increment / decrement for collection elements with user-defined get / set fixed
• KT-9739 Backticked names with spaces are generated correctly

JS translator issues fixed:

• KT-7683, KT-11027 correct handling of in / !in inside when expressions

Standard library

• KT-10579 Improved performance of sum() and average() for arrays
• KT-10821 Improved performance of drop() / take() for sequences

IDE

New features:

• Compatibility with IDEA 2016
• Kotlin Education Plugin (for IDEA 2016)
• KT-9752 More usable file chooser for "Move declaration to another file"
• KT-9697 Move method to companion object and back

General issues fixed:

• KT-11277 Correct moving of Java classes from project view
• KT-11256 Navigate Declaration fixed for Java classes with @NotNull parameter in constructor
• KT-10553 A warning provided when Refactor / Move result is not compilable due to visibility problems
• KT-11039 Parameter names are now not missing in parameter info and completion for compiled java code used from kotlin
• KT-10204 Highlight usages in file is working now for function parameter
• KT-10954 Introduce Parameter (Ctrl+Alt+P) fixed when default value is a simple name reference
• KT-10776 Intentions: "Convert to lambda expression" works now for empty function body
• KT-10815 Generate equals() and hashCode() is no more suggested for interfaces
• KT-10818 "Initialize with constructor parameter" fixed
• KT-8876 "Convert member to extension" now removes modality modifiers (open / final)
• KT-10800 Create enum entry now adds comma after a new entry
• KT-10552 Pull Members Up now takes visibility conflicts into account
• KT-10978 Partially fixed, completion for JOOQ became ~ 10 times faster
• KT-10940 Reference search optimized for convention functions
• KT-9026 Editor no more locks up during scala file viewing
• KT-11142, KT-11276 Darkula scheme appearance corrected for Kotlin
• Minor: KT-10778, KT-10763, KT-10908, KT-10345, KT-10696, KT-11041, KT-9434

Configuration issues fixed:

• KT-11213 Kotlin plugin version corrected in build.gradle
• KT-10918 "Update Kotlin runtime" action does not try to update the runtime coming in from Gradle
• KT-11072 Libraries in maven, gradle and ide systems are never more detected as runtime libraries
• KT-10489 Configuration messages are aggregated into one notification
• KT-10831 Configure Kotlin in Project: "All modules containing Kotlin files" does not list modules not containing Kotlin files
• KT-10366 Gradle import: no fake "Configure Kotlin" notification on project creating

Debugger issues fixed:

• KT-10827 Fixed debugger stepping for inline calls
• KT-10780 Breakpoints in a lazy property work correctly
• KT-10634 Watches can now use private overloaded functions
• KT-10611 Line breakpoints now can be created inside lambda in init block
• KT-10673 Breakpoints inside lambda are no more ignored in presence of crossinline function parameter
• KT-11318 Stepping inside for each is optimized
• KT-3873 Editing code while standing on breakpoint is optimized
• KT-7261, KT-7266, KT-10672 Evaluate expression applicability corrected

Tools

• KT-7943, KT-10127 Overhead removed in Kotlin Gradle Plugin
• KT-11351 Fixed NoSuchMethodError with Gradle 2.12